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Cisco Cisco Virtual Topology System 2.2 Installation Guide

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© 2016 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. 
Page 21 of 27 
Day Zero Configuration Changes Required on IOS XRv 
Basic IGP Neighbor-ship for BGP EVPN Advertisement 
interface GigabitEthernet0/0/0/0 
   ipv4 address 10.29.128.12 255.255.255.0 
interface Loopback0 
ipv4 address 20.1.0.4 255.255.255.255 
! 
router ospf 100 
router-id 20.1.0.4 
address-family ipv4 unicast 
area 0.0.0.0 
default-cost 10 
interface Loopback0 
! 
interface GigabitEthernet0/0/0/0 
! 
interface GigabitEthernet0/0/0/1 
! 
! 
Corresponding Day 0 Configuration on Leaf/Spine 
router ospf 100 
router-id 4.4.4.4 
area 0.0.0.0 default-cost 10 
interface loopback0 
ip address 4.4.4.4/32 
ip router ospf 100 area 0.0.0.0 
ip pim sparse-mode 
 
vlan 800 
no shutdown 
 
interface Vlan800 
no shutdown 
ip address 10.29.128.1/24 
ip router ospf 100 area 0.0.0.0 
ip pim sparse-mode 
 
interface ethernet 1/1 This is the interface where the IOS XRv connects to 
leaf or spine 
no shutdown 
switchport mode access 
switchport access vlan800 
Underlay Day Zero Routing to Advertise for VTF and IOSXRv n/w to all Devices in Data 
Center Topology 
 
The VTF IP address needs to be routed via the underlay network so that the VTF endpoint is 
advertised to all